I have been looking at various sources to try to figure out the difference between "mündig", "volljährig", and "reif".
I understand that "reif" means mature, but also that "mündig" can also be translated as mature, as well as "of age", which is what "volljährig" seems to be. I've also seen sentences such as "sich mündig verhalten", but not "sich volljährig verhalten".